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Oliga [24]
2 years ago
13

Find the reference angle of 100 degrees

Mathematics
1 answer:
Roman55 [17]2 years ago
4 0

Since the angle  

100 °  is in the second quadrant, the reference angle formula is  A r = 180 ° −

A c.   A r = 180 ° − 100 °

The reference angle is  A r = 80 ° .

80 °

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Answer:

Step-by-step explanation:

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2 years ago
Ique si los puntos: A( -3 , 3 ) y B( 0 , -15 ), pertenecen o no a la recta -4x-y+15=0
Papessa [141]

Respuesta:

El punto A(-3, 3) pertenece a la recta.

El punto B(0, -15) no pertence a la recta.

Explicación paso a paso:

Consideremos la siguiente ecuación de la recta en forma estandar.

-4x - y + 15 = 0

Para verificar si los puntos A y B pertencen a la recta, primero la transformaremos a la forma explícita.

-4x - y + 15 = 0

-4x + 15 = y

y = -4x + 15

El punto A(-3, 3), tiene coordenada x -3 y coordenada y 3. Reemplazaremos x en la ecuación de la recta y veremos si obtenemos el mismo valor de y.

y = -4(-3) + 15 = 3

El punto A(-3, 3) pertenece a la recta.

El punto B(0, -15), tiene coordenada x 0 y coordenada y -15. Reemplazaremos x en la ecuación de la recta y veremos si obtenemos el mismo valor de y.

y = -4(0) + 15 = 15

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6 0
2 years ago
Can anyone send working of this please ?
andrezito [222]
The parallel lines create similar triangles. Which means sides are proportional...
\frac{BR}{CS} = \frac{AR}{AS}
\frac{BR}{CS} = \frac{10}{14} = \frac{5}{7}
So if then the ratio of AR to AS = 5/7
Create a proportion with the other similar triangle that contains the shared side:
  \frac{5}{7} = \frac{e}{18}
Cross multiply
e = \frac{90}{7}=12 \frac{6}{7}
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3 years ago
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Answer:

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Step-by-step explanation:

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2 years ago
What is y if x equals 5. <br><br> Y=-4x^2-3x+4
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I hope I did this right but y= -146
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Read 2 more answers
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